Function headless_lms_models::teacher_grading_decisions::try_to_get_latest_grading_decision_by_user_exercise_state_id

pub async fn try_to_get_latest_grading_decision_by_user_exercise_state_id(
    conn: &mut PgConnection,
    user_exercise_state_id: Uuid
) -> ModelResult<Option<TeacherGradingDecision>>